GRS_EXIT_PERFORMANCE

Description:

Checks to see if there are GRS dynamic exits in use that could degrade system performance.

Reason for check:

The use of certain GRS dynamic exits can degrade system performance. In some cases, removing an exit module or changing it to use a different exit point can help improve performance.

z/OS® releases the check applies to:

z/OS V1R4 and later.

Parameters accepted:

User override of IBM® values:

The following shows the default keywords for the check, which you can override on either a POLICY statement in the HZSPRMxx parmlib member or on a MODIFY command. This statement may be copied and modified to override the check defaults:

  UPDATE CHECK(IBMGRS,GRS_EXIT_PERFORMANCE)                        
        SEVERITY(LOW) INTERVAL(024:00) DATE(20050105)                    
        REASON('YOUR REASON FOR MAKING AN UPDATE.')

Reference:

For more information on GRS installation exits, see z/OS MVS Planning: Global Resource Serialization andz/OS MVS Installation Exits.

Messages:

This check issues the following exception messages:

ISGH0309E
ISGH0310E
ISGH0311E
ISGH0312E
ISGH0313E

See the ISGH messages in z/OS MVS System Messages, Vol 9 (IGF-IWM).

SECLABEL recommended for multilevel security users:

SYSLOW - see z/OS Planning for Multilevel Security and the Common Criteria for information on using SECLABELs.